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Analysis of Effectiveness, Safety and Optimization of Tocilizumab in a Cohort of Patients With Rheumatoid Arthritis in Clinical Practice
To evaluate the effectiveness and safety of tocilizumab (TCZ) in patients with rheumatoid arthritis (RA) in clinical practice, establishing the optimised regimen and switching from intravenous (IV) to subcutaneous (SC) therapy. Retrospective observational study. We included 53 RA patients treated wi...
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Published in: | Reumatología clinica (Barcelona) 2019-01, Vol.15 (1), p.21-26 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | To evaluate the effectiveness and safety of tocilizumab (TCZ) in patients with rheumatoid arthritis (RA) in clinical practice, establishing the optimised regimen and switching from intravenous (IV) to subcutaneous (SC) therapy.
Retrospective observational study. We included 53 RA patients treated with TCZ. The main outcome was TCZ effectiveness at week 24. Secondary outcome variables included effectiveness at week 52, therapeutic maintenance, physical function and safety. The effectiveness of optimization and the switch from IV to SC was evaluated at 3 and 6 months. The efficacy was measured with the Disease Activity Score. Paired t-tests or Wilcoxon were used to evaluate effectiveness and survival time using Kaplan–Meier.
The proportion of patients who achieved remission or low disease activity at weeks 24 and 52 was 75.5% and 87.3%, respectively. The mean retention time (95% confidence interval [95% CI] was 81.7 months [76.6–86.7]). Twenty-one of 53 patients (39.6%) optimised the TCZ dose and 35 patients switched from IV TCZ to SC, with no changes in effectiveness. The adverse event rate was 13.6 events/100 patient-years.
Tocilizumab appears to be effective and safe in RA in clinical practice. The optimised regimen appears to be effective in most patients in remission, even when they change from IV to SC.
Evaluar la efectividad y la seguridad de tocilizumab (TCZ) en pacientes con artritis reumatoide (AR) en práctica clínica; la optimización de dosis y el cambio de formulación intravenosa (iv) a subcutánea (sc).
Estudio observacional retrospectivo. Se incluyó a 53 pacientes con AR tratados con TCZ. El desenlace principal fue efectividad de TCZ en la semana 24. Variables de desenlace secundarias incluyeron: efectividad en la semana 52, tiempo de retención del tratamiento, función física y seguridad. También se midió efectividad de la optimización de dosis y del cambio de formulación iv a sc a los 3 y 6 meses. La efectividad se midió con el índice de actividad según el Disease activity score-28. Se usó la prueba T pareada o prueba de rangos con signos de Wilcoxon para evaluar efectividad y el tiempo de supervivencia mediante curvas de Kaplan-Meier.
La proporción de pacientes que alcanzaron la remisión o baja actividad de la enfermedad en las semanas 24 y 52 fue del 75,5 y el 87,3%, respectivamente. La media de tiempo de retención (intervalo de confianza del 95% [IC del 95%]) fue de 81,7 meses (76,6-86,7). Veintiuno de 53 pacientes (39,6%) optimizaron la dos |
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ISSN: | 2173-5743 2173-5743 |
DOI: | 10.1016/j.reumae.2017.05.007 |